Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:27:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void dfs_euler(int)’: user.cpp:48:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void marcheaza(int)’: user.cpp:77:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) ^